The sample test suite at sample/test_suite.yaml contained incorrect
syntax. It has been updated to add the "default" parameter to
"task_args" when running a testcase.
JIRA: YARDSTICK-1125
Change-Id: I53409168e47d969317145623df1e2c789396cc32
Signed-off-by: Emma Foley <emma.l.foley@intel.com>
(cherry picked from commit 
7b00d64494bdd61f2ab37005de76fa5f6496d45d)
   file_name: ping.yaml
 -
   file_name: ping-template.yaml
-  task_args: '{"packetsize": "200"}'
+  task_args:
+    default: '{"packetsize": "200"}'
 -
   file_name: ping-template.yaml
   task_args_file: "/tmp/test-args-file.json"